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. Author manuscript; available in PMC: 2009 Oct 30.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2007 Mar 29;68(3):682–689. doi: 10.1016/j.ijrobp.2007.01.008

Table 2.

Multivariate analyses of biochemical failure

ASTRO BF
 Nadir + 2 BF
Variable Type RR (95%CI) p value RR (95%CI) p value
Dose Continuous 0.92 (0.89–0.94) <0.0001 0.94 (0.91–0.97) 0.0002
T3–T4 Dichotomous 2.27 (1.58–3.26) <0.0001 2.37 (1.85–3.03) 0.0003
GS 7–10 Dichotomous 2.07 (1.63–2.61) <0.0001 2.07 (1.63–2.61) <0.0001
iPSA Continuous 1.02 (1.02–1.03) <0.0001 1.02 (1.02–1.02) <0.0001

Abreviations: BF = biochemical failure; RR = relative risk, with 95% confidence interval (CI) in parentheses.